%0 journal article
%@ 0257-8972
%A Arrabal, R.,Mohedano, M.,Matykina, E.,Pardo, A.,Mingo, B.,Merino, M.C.

%D 2015
%J Surface and Coatings Technology
%N 
%P 64-73 
%R doi:10.1016/j.surfcoat.2014.10.048
%T Characterization and wear behaviour of PEO coatings on 6082-T6 aluminium alloy with incorporated α-Al2O3 particles
%U https://doi.org/10.1016/j.surfcoat.2014.10.048
 
%X Plasma electrolytic oxidation (PEO) coatings with incorporated α-Al2O3 particles were formed on 6082-T6 alloy. Effects of particle concentration on phase composition and wear behaviour were investigated. Tribological performance was compared with that of electrolytic hard chrome. Results suggested that α-Al2O3 particles are incorporated into the outer layer of the coatings either by deposition, electrophoresis or mechanical entrapment by the material ejected from the discharge channels. As a result, the outer layer shows lower porosity and increased hardness. Friction coefficients of untreated 6082-T6 alloy and hard chrome coating remained relatively unaffected as the normal load increased from 2 to 10 N. Friction coefficients of PEO coatings slightly increased with the applied load and were similar or slightly higher than those of hard chrome. PEO coatings with incorporated α-Al2O3 particles showed the lowest wear volumes among all tested materials, suggesting that they could be a promising alternative to hard chrome coatings.